Abbreviations

bf	Blindfold game
ch	Championship
CCC ch	National Championship, where CCC is the three character country code
cm	Candidates' match
cr	Correspondence game
ct	Candidates' tournament
drr	Double Round Robin
it	International tournament
izt	Interzonal tournament
jr	Junior
m	Match
olm	Olympiad
op	Open
po	Play Off
p or prel	Preliminary
r-m	Radio match
st-t	Students' tournament
tg	Training game
tt	Team tournament
t-ch	Team championship
th-t	Thematic tournament
Wch	World championship
zt	Zonal tournament
BEC	British Empire Club (London)
ICC	Imperial Chess Club (London)
GM	Grandmaster
Tmt	Tournament